Engler, H.G.A. (1892), Syllabus Edn. 1: 58 [tax. nov.]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 310, 928 [taxonomic synonym]

taxonomic synonym of: Equisetopsida C.Agardh legitimate

Council of Heads of Australasian Herbaria (2009), Australian Plant Census: - [secondary reference]

orthographic variant: Sphenophyllales Engl. orth. var.

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Equisetopsida C.Agardh legitimate

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